The state of string interpolation...one year later

[Patrick Schluter]

On Monday, 18 March 2019 at 16:48:59 UTC, H. S. Teoh wrote:
> On Mon, Mar 18, 2019 at 04:30:26PM +0000, Meta via 
> Digitalmars-d wrote:
>> On Monday, 18 March 2019 at 09:07:26 UTC, Olivier FAURE wrote:
>> > On Sunday, 17 March 2019 at 06:01:35 UTC, Jonathan Marler 
>> > wrote:
>> > > https://github.com/dlang/dmd/pull/7988
>> > 
>> > By the way, quick question, how does the PR handle this case?
>> > 
>> >     i"$a $b" ~ i$"c $d"
>> 
>> Also, recursive use of interpolated strings. Does this work or 
>> fail with a compiler error like "can't find symbol c":
>> 
>> int a = 2, b = 5;
>> enum code = text(i"mixin(\"int c = $(a + b)\"); writeln(i\"a = 
>> $a, b =
>> $b, c = $c\");");
>> mixin(code);
> [...]
>
> I'd expect you'd have to escape the $ in the nested 
> interpolated string. I forgot what the escape was, perhaps `$$`?
>
\$ would be consistent with normal C and D quoting rules. $$ not 
so much.